Genetic divergence and phenotypic plasticity contribute to variation in cuticular hydrocarbons in the seaweed fly Coelopa frigida

Berdan, Emma L,1983Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences (författare)

Cuticular hydrocarbons (CHCs) form the boundary between insects and their environments and often act as essential cues for species, mate, and kin recognition. This complex polygenic trait can be highly variable both among and within species, but the causes of this variation, especially the genetic basis, are largely unknown. In this study, we investigated phenotypic and genetic variation of CHCs in the seaweed fly, Coelopa frigida, and found that composition was affected by both genetic (sex and population) and environmental (larval diet) factors. We subsequently conducted behavioral trials that show CHCs are likely used as a sexual signal. We identified general shifts in CHC chemistry as well as individual compounds and found that the methylated compounds, mean chain length, proportion of alkenes, and normalized total CHCs differed between sexes and populations. We combined these data with whole genome resequencing data to examine the genetic underpinnings of these differences. We identified 11 genes related to CHC synthesis and found population-level outlier SNPs in 5 that are concordant with phenotypic differences. Together these results reveal that the CHC composition of C. frigida is dynamic, strongly affected by the larval environment, and likely under natural and sexual selection.

NATURVETENSKAP Geovetenskap och miljövetenskap Oceanografi, hydrologi och vattenresurser hsv//swe
NATURAL SCIENCES Earth and Related Environmental Sciences Oceanography, Hydrology and Water Resources hsv//eng
NATURVETENSKAP Geovetenskap och miljövetenskap Miljövetenskap hsv//swe
NATURAL SCIENCES Earth and Related Environmental Sciences Environmental Sciences hsv//eng
Coelopa frigida
cuticular hydrocarbons
diet
population differentiation
sexual signal
cactophilic drosophila-mojavensis
female mating preference
aggregation
pheromone
premating isolation
mate choice
inversion frequencies
chromosomal inversion
melanogaster
evolution
populations
Environmental Sciences & Ecology
Evolutionary Biology

Enge, Swantje,1981Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper, Tjärnö marinlaboratoriet,Department of marine sciences, Tjärnö Marine Laboratory(Swepub:gu)xenges (författare)
Nylund, Göran M.,1974Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper, Tjärnö marinlaboratoriet,Department of marine sciences, Tjärnö Marine Laboratory(Swepub:gu)xnylgo (författare)
Wellenreuther, M. (författare)
Martens, G. A. (författare)
Pavia, Henrik,1964Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper, Tjärnö marinlaboratoriet,Department of marine sciences, Tjärnö Marine Laboratory(Swepub:gu)xpavhe (författare)
Göteborgs universitetInstitutionen för marina vetenskaper (creator_code:org_t)

Av författaren/redakt...: Berdan, Emma L, ...; Enge, Swantje, 1 ...; Nylund, Göran M. ...; Wellenreuther, M ...; Martens, G. A.; Pavia, Henrik, 1 ...

Om ämnet

NATURVETENSKAP: NATURVETENSKAP; och Geovetenskap och ...; och Oceanografi hydr ...

NATURVETENSKAP: NATURVETENSKAP; och Geovetenskap och ...; och Miljövetenskap

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